Recyclable magnetic Fe3O4@SiO2/β-NaYF4:Yb3+,Tm3+/TiO2 composites with NIR enhanced photocatalytic activity
作者： Zhangxu Chen , Ming-Lai Fu
DOI: 10.1016/J.MATERRESBULL.2018.07.016
关键词:
摘要: Abstract To extend the activities of TiO 2 to near infrared (NIR) region and separate recycle photocatalysts easily is vital for high harvest solar energy sustainable society. The magnetic NIR activated Fe 3 O 4 @SiO /β-NaYF :Yb 3+ ,Tm /TiO (FS/UC/T) composites have been synthesized by using solvothermal method adding Degussa P25 into mixed solution NaOH, ethanol, oleic acid, Re(NO ) NH F. Moreover, obtained were explored photocatalytic applications. It was found that FS/UC/T emit UV–vis light under irradiation 980 nm laser efficient transfer from β-NaYF verified. photodegradation experiments treating methylene blue (MB), rhodamine B (RhB), methyl orange (MO) colorless phenol carried out evaluate samples. rates reach 76.62%, 68.48%, 30.05% 27.16% MB, RhB, MO laser, respectively, which suggested composite an advanced NIR-driven photocatalyst. photocatalyst showed easy separation good stability in recycled tests. a promising system utilize photocatalysis based on photocatalysts, will contribute practical environmental remediation future.
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